<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>菜单</title>
		<style>
			ul{
				list-style: none;
			}
			li{
				float:left;
				margin-right:10px;
				background-color: chartreuse;
				padding:5px 10px 5px 10px;
				color: #FF0000;
				border-radius: 15px;
			}
			li:hover{/*鼠标操作事件:拖动/移动/单击/双击,鼠标移动,移入*/
				background-color: blue;
			}
		</style>
	</head>
	<body>
		<ul>
			<!---a连接,href属性网站地址,target属性设置是否弹出-->
			<li><a target="_blank" href = "user.html" style="text-decoration: none;">w3school</a></li>
			<li><a>菜鸟教程</a></li>
			<li>博客园</li>
			<li>CSDN</li>
			<li>思否</li>
		</ul>
	</body>
</html>
